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<a name="1" href="#1">1</a>   <em class="comment">/*</em>
<a name="2" href="#2">2</a>   <em class="comment"> * $Header$</em>
<a name="3" href="#3">3</a>   <em class="comment"> * $Revision: 1132 $</em>
<a name="4" href="#4">4</a>   <em class="comment"> * $Date: 2006-03-30 05:53:11 -0800 (Thu, 30 Mar 2006) $</em>
<a name="5" href="#5">5</a>   <em class="comment"> *</em>
<a name="6" href="#6">6</a>   <em class="comment"> * ====================================================================</em>
<a name="7" href="#7">7</a>   <em class="comment"> *</em>
<a name="8" href="#8">8</a>   <em class="comment"> * Copyright 2000-2002 bob mcwhirter &amp; James Strachan.</em>
<a name="9" href="#9">9</a>   <em class="comment"> * All rights reserved.</em>
<a name="10" href="#10">10</a>  <em class="comment"> *</em>
<a name="11" href="#11">11</a>  <em class="comment"> * Redistribution and use in source and binary forms, with or without</em>
<a name="12" href="#12">12</a>  <em class="comment"> * modification, are permitted provided that the following conditions are</em>
<a name="13" href="#13">13</a>  <em class="comment"> * met:</em>
<a name="14" href="#14">14</a>  <em class="comment"> * </em>
<a name="15" href="#15">15</a>  <em class="comment"> *   * Redistributions of source code must retain the above copyright</em>
<a name="16" href="#16">16</a>  <em class="comment"> *     notice, this list of conditions and the following disclaimer.</em>
<a name="17" href="#17">17</a>  <em class="comment"> * </em>
<a name="18" href="#18">18</a>  <em class="comment"> *   * Redistributions in binary form must reproduce the above copyright</em>
<a name="19" href="#19">19</a>  <em class="comment"> *     notice, this list of conditions and the following disclaimer in the</em>
<a name="20" href="#20">20</a>  <em class="comment"> *     documentation and/or other materials provided with the distribution.</em>
<a name="21" href="#21">21</a>  <em class="comment"> * </em>
<a name="22" href="#22">22</a>  <em class="comment"> *   * Neither the name of the Jaxen Project nor the names of its</em>
<a name="23" href="#23">23</a>  <em class="comment"> *     contributors may be used to endorse or promote products derived </em>
<a name="24" href="#24">24</a>  <em class="comment"> *     from this software without specific prior written permission.</em>
<a name="25" href="#25">25</a>  <em class="comment"> * </em>
<a name="26" href="#26">26</a>  <em class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS</em>
<a name="27" href="#27">27</a>  <em class="comment"> * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED</em>
<a name="28" href="#28">28</a>  <em class="comment"> * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A</em>
<a name="29" href="#29">29</a>  <em class="comment"> * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER</em>
<a name="30" href="#30">30</a>  <em class="comment"> * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</em>
<a name="31" href="#31">31</a>  <em class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,</em>
<a name="32" href="#32">32</a>  <em class="comment"> * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR</em>
<a name="33" href="#33">33</a>  <em class="comment"> * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF</em>
<a name="34" href="#34">34</a>  <em class="comment"> * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</em>
<a name="35" href="#35">35</a>  <em class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</em>
<a name="36" href="#36">36</a>  <em class="comment"> * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</em>
<a name="37" href="#37">37</a>  <em class="comment"> *</em>
<a name="38" href="#38">38</a>  <em class="comment"> * ====================================================================</em>
<a name="39" href="#39">39</a>  <em class="comment"> * This software consists of voluntary contributions made by many </em>
<a name="40" href="#40">40</a>  <em class="comment"> * individuals on behalf of the Jaxen Project and was originally </em>
<a name="41" href="#41">41</a>  <em class="comment"> * created by bob mcwhirter &lt;bob@werken.com> and </em>
<a name="42" href="#42">42</a>  <em class="comment"> * James Strachan &lt;jstrachan@apache.org>.  For more information on the </em>
<a name="43" href="#43">43</a>  <em class="comment"> * Jaxen Project, please see &lt;<a href="http://www.jaxen.org/" target="alexandria_uri">http://www.jaxen.org/</a>>.</em>
<a name="44" href="#44">44</a>  <em class="comment"> * </em>
<a name="45" href="#45">45</a>  <em class="comment"> * $Id: JaxenHandler.java 1132 2006-03-30 13:53:11Z elharo $</em>
<a name="46" href="#46">46</a>  <em class="comment"> */</em>
<a name="47" href="#47">47</a>  
<a name="48" href="#48">48</a>  
<a name="49" href="#49">49</a>  
<a name="50" href="#50">50</a>  <strong>package</strong> org.jaxen;
<a name="51" href="#51">51</a>  
<a name="52" href="#52">52</a>  <strong>import</strong> java.util.Iterator;
<a name="53" href="#53">53</a>  <strong>import</strong> java.util.LinkedList;
<a name="54" href="#54">54</a>  
<a name="55" href="#55">55</a>  <strong>import</strong> org.jaxen.expr.DefaultXPathFactory;
<a name="56" href="#56">56</a>  <strong>import</strong> org.jaxen.expr.Expr;
<a name="57" href="#57">57</a>  <strong>import</strong> org.jaxen.expr.FilterExpr;
<a name="58" href="#58">58</a>  <strong>import</strong> org.jaxen.expr.FunctionCallExpr;
<a name="59" href="#59">59</a>  <strong>import</strong> org.jaxen.expr.LocationPath;
<a name="60" href="#60">60</a>  <strong>import</strong> org.jaxen.expr.Predicate;
<a name="61" href="#61">61</a>  <strong>import</strong> org.jaxen.expr.Predicated;
<a name="62" href="#62">62</a>  <strong>import</strong> org.jaxen.expr.Step;
<a name="63" href="#63">63</a>  <strong>import</strong> org.jaxen.expr.XPathExpr;
<a name="64" href="#64">64</a>  <strong>import</strong> org.jaxen.expr.XPathFactory;
<a name="65" href="#65">65</a>  <strong>import</strong> org.jaxen.saxpath.Operator;
<a name="66" href="#66">66</a>  <strong>import</strong> org.jaxen.saxpath.XPathHandler;
<a name="67" href="#67">67</a>  
<a name="68" href="#68">68</a>  <em>/**</em><em> SAXPath &lt;code>XPathHandler&lt;/code> implementation capable</em>
<a name="69" href="#69">69</a>  <em> *  of building Jaxen expression trees which can walk various</em>
<a name="70" href="#70">70</a>  <em> *  different object models.</em>
<a name="71" href="#71">71</a>  <em> *</em>
<a name="72" href="#72">72</a>  <em> *  @author bob mcwhirter (bob@werken.com)</em>
<a name="73" href="#73">73</a>  <em> */</em>
<a name="74" href="#74">74</a>  <strong>public</strong> <strong>class</strong> <a href="../../org/jaxen/JaxenHandler.html">JaxenHandler</a> implements <a href="../../org/jaxen/saxpath/XPathHandler.html">XPathHandler</a>
<a name="75" href="#75">75</a>  {
<a name="76" href="#76">76</a>      <strong>private</strong> <a href="../../org/jaxen/expr/XPathFactory.html">XPathFactory</a> xpathFactory;
<a name="77" href="#77">77</a>      <strong>private</strong> <a href="../../org/jaxen/expr/XPathExpr.html">XPathExpr</a>    xpath;
<a name="78" href="#78">78</a>      
<a name="79" href="#79">79</a>      <em>/**</em>
<a name="80" href="#80">80</a>  <em>     * ????</em>
<a name="81" href="#81">81</a>  <em>     */</em>
<a name="82" href="#82">82</a>      <strong>protected</strong> <strong>boolean</strong> simplified;
<a name="83" href="#83">83</a>  
<a name="84" href="#84">84</a>      <em>/**</em>
<a name="85" href="#85">85</a>  <em>     * This may be changed to an ArrayList in the future (i.e. version &amp;gt;= 1.2). </em>
<a name="86" href="#86">86</a>  <em>     * You really shouldn't be accessing this field directly, but</em>
<a name="87" href="#87">87</a>  <em>     * if you are please try to use it as a generic List. Don't use the </em>
<a name="88" href="#88">88</a>  <em>     * methods that are only available in LinkedList.</em>
<a name="89" href="#89">89</a>  <em>     */</em>
<a name="90" href="#90">90</a>      <strong>protected</strong> LinkedList stack;
<a name="91" href="#91">91</a>  
<a name="92" href="#92">92</a>      <em>/**</em><em> Constructor</em>
<a name="93" href="#93">93</a>  <em>     */</em>
<a name="94" href="#94">94</a>      <strong>public</strong> <a href="../../org/jaxen/JaxenHandler.html">JaxenHandler</a>()
<a name="95" href="#95">95</a>      {
<a name="96" href="#96">96</a>          <strong>this</strong>.stack        = <strong>new</strong> LinkedList();
<a name="97" href="#97">97</a>          <strong>this</strong>.xpathFactory = <strong>new</strong> <a href="../../org/jaxen/expr/DefaultXPathFactory.html">DefaultXPathFactory</a>();
<a name="98" href="#98">98</a>      }
<a name="99" href="#99">99</a>      
<a name="100" href="#100">100</a>     <em>/**</em><em> Set the Jaxen &lt;code>XPathFactory&lt;/code> that constructs</em>
<a name="101" href="#101">101</a> <em>     *  the XPath expression tree during the parse.</em>
<a name="102" href="#102">102</a> <em>     *</em>
<a name="103" href="#103">103</a> <em>     *  @param xpathFactory the factory to use during the parse</em>
<a name="104" href="#104">104</a> <em>     */</em>
<a name="105" href="#105">105</a>     <strong>public</strong> <strong>void</strong> setXPathFactory(<a href="../../org/jaxen/expr/XPathFactory.html">XPathFactory</a> xpathFactory)
<a name="106" href="#106">106</a>     {
<a name="107" href="#107">107</a>         <strong>this</strong>.xpathFactory = xpathFactory;
<a name="108" href="#108">108</a>     }
<a name="109" href="#109">109</a> 
<a name="110" href="#110">110</a>     <em>/**</em><em> Retrieve the Jaxen &lt;code>XPathFactory&lt;/code> used</em>
<a name="111" href="#111">111</a> <em>     *  during the parse to construct the XPath expression tree.</em>
<a name="112" href="#112">112</a> <em>     *</em>
<a name="113" href="#113">113</a> <em>     *  @return the &lt;code>XPathFactory&lt;/code> used during the parse.</em>
<a name="114" href="#114">114</a> <em>     */</em>
<a name="115" href="#115">115</a>     <strong>public</strong> <a href="../../org/jaxen/expr/XPathFactory.html">XPathFactory</a> getXPathFactory()
<a name="116" href="#116">116</a>     {
<a name="117" href="#117">117</a>         <strong>return</strong> <strong>this</strong>.xpathFactory;
<a name="118" href="#118">118</a>     }
<a name="119" href="#119">119</a> 
<a name="120" href="#120">120</a>     <em>/**</em><em> Retrieve the simplified Jaxen XPath expression tree.</em>
<a name="121" href="#121">121</a> <em>     *</em>
<a name="122" href="#122">122</a> <em>     *  &lt;p></em>
<a name="123" href="#123">123</a> <em>     *  This method is only valid once &lt;code>XPathReader.parse(...)&lt;/code></em>
<a name="124" href="#124">124</a> <em>     *  successfully returned.</em>
<a name="125" href="#125">125</a> <em>     *  &lt;/p></em>
<a name="126" href="#126">126</a> <em>     *</em>
<a name="127" href="#127">127</a> <em>     *  @return the XPath expression tree</em>
<a name="128" href="#128">128</a> <em>     */</em>
<a name="129" href="#129">129</a>     <strong>public</strong> <a href="../../org/jaxen/expr/XPathExpr.html">XPathExpr</a> getXPathExpr()
<a name="130" href="#130">130</a>     {
<a name="131" href="#131">131</a>         <strong>return</strong> getXPathExpr( <strong>true</strong> );
<a name="132" href="#132">132</a>     }
<a name="133" href="#133">133</a> 
<a name="134" href="#134">134</a>     <em>/**</em><em> Retrieve the Jaxen XPath expression tree, optionally</em>
<a name="135" href="#135">135</a> <em>     *  simplified.</em>
<a name="136" href="#136">136</a> <em>     *</em>
<a name="137" href="#137">137</a> <em>     *  &lt;p></em>
<a name="138" href="#138">138</a> <em>     *  This method is only valid once &lt;code>XPathReader.parse(...)&lt;/code></em>
<a name="139" href="#139">139</a> <em>     *  successfully returned.</em>
<a name="140" href="#140">140</a> <em>     *  &lt;/p></em>
<a name="141" href="#141">141</a> <em>     *  </em>
<a name="142" href="#142">142</a> <em>     *  @param shouldSimplify ????</em>
<a name="143" href="#143">143</a> <em>     *</em>
<a name="144" href="#144">144</a> <em>     *  @return the XPath expression tree</em>
<a name="145" href="#145">145</a> <em>     */</em>
<a name="146" href="#146">146</a>     <strong>public</strong> <a href="../../org/jaxen/expr/XPathExpr.html">XPathExpr</a> getXPathExpr(<strong>boolean</strong> shouldSimplify)
<a name="147" href="#147">147</a>     {
<a name="148" href="#148">148</a>         <strong>if</strong> ( shouldSimpl<strong>if</strong>y &amp;&amp; ! <strong>this</strong>.simpl<strong>if</strong>ied )
<a name="149" href="#149">149</a>         {
<a name="150" href="#150">150</a>             <strong>this</strong>.xpath.simplify();
<a name="151" href="#151">151</a>             <strong>this</strong>.simplified = <strong>true</strong>;
<a name="152" href="#152">152</a>         }
<a name="153" href="#153">153</a> 
<a name="154" href="#154">154</a>         <strong>return</strong> <strong>this</strong>.xpath;
<a name="155" href="#155">155</a>     }
<a name="156" href="#156">156</a> 
<a name="157" href="#157">157</a>     <strong>public</strong> <strong>void</strong> startXPath()
<a name="158" href="#158">158</a>     {
<a name="159" href="#159">159</a>         <strong>this</strong>.simplified = false;
<a name="160" href="#160">160</a>         pushFrame();
<a name="161" href="#161">161</a>     }
<a name="162" href="#162">162</a>     
<a name="163" href="#163">163</a>     <strong>public</strong> <strong>void</strong> endXPath() throws JaxenException
<a name="164" href="#164">164</a>     {
<a name="165" href="#165">165</a>         <strong>this</strong>.xpath = getXPathFactory().createXPath( (Expr) pop() );
<a name="166" href="#166">166</a>         popFrame();
<a name="167" href="#167">167</a>     }
<a name="168" href="#168">168</a> 
<a name="169" href="#169">169</a>     <strong>public</strong> <strong>void</strong> startPathExpr()
<a name="170" href="#170">170</a>     {
<a name="171" href="#171">171</a>         pushFrame();
<a name="172" href="#172">172</a>     }
<a name="173" href="#173">173</a> 
<a name="174" href="#174">174</a>     <strong>public</strong> <strong>void</strong> endPathExpr() throws JaxenException
<a name="175" href="#175">175</a>     {
<a name="176" href="#176">176</a> 
<a name="177" href="#177">177</a>         <em class="comment">// PathExpr ::=   LocationPath</em>
<a name="178" href="#178">178</a>         <em class="comment">//              | FilterExpr</em>
<a name="179" href="#179">179</a>         <em class="comment">//              | FilterExpr / RelativeLocationPath</em>
<a name="180" href="#180">180</a>         <em class="comment">//              | FilterExpr // RelativeLocationPath</em>
<a name="181" href="#181">181</a>         <em class="comment">//</em>
<a name="182" href="#182">182</a>         <em class="comment">// If the current stack-frame has two items, it's a</em>
<a name="183" href="#183">183</a>         <em class="comment">// FilterExpr and a LocationPath (of some flavor).</em>
<a name="184" href="#184">184</a>         <em class="comment">//</em>
<a name="185" href="#185">185</a>         <em class="comment">// If the current stack-frame has one item, it's simply</em>
<a name="186" href="#186">186</a>         <em class="comment">// a FilterExpr, and more than likely boils down to a</em>
<a name="187" href="#187">187</a>         <em class="comment">// primary expr of some flavor.  But that's for another</em>
<a name="188" href="#188">188</a>         <em class="comment">// method...</em>
<a name="189" href="#189">189</a> 
<a name="190" href="#190">190</a>         <a href="../../org/jaxen/expr/FilterExpr.html">FilterExpr</a>   filterExpr;
<a name="191" href="#191">191</a>         <a href="../../org/jaxen/expr/LocationPath.html">LocationPath</a> locationPath;
<a name="192" href="#192">192</a> 
<a name="193" href="#193">193</a>         Object       popped;
<a name="194" href="#194">194</a> 
<a name="195" href="#195">195</a>         <strong>if</strong> ( stackSize() == 2 )
<a name="196" href="#196">196</a>         {
<a name="197" href="#197">197</a>             locationPath = (LocationPath) pop();
<a name="198" href="#198">198</a>             filterExpr   = (FilterExpr) pop();
<a name="199" href="#199">199</a>         }
<a name="200" href="#200">200</a>         <strong>else</strong>
<a name="201" href="#201">201</a>         {
<a name="202" href="#202">202</a>             popped = pop();
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a>             <strong>if</strong> ( popped instanceof LocationPath )
<a name="205" href="#205">205</a>             {
<a name="206" href="#206">206</a>                 locationPath = (LocationPath) popped;
<a name="207" href="#207">207</a>                 filterExpr   = <strong>null</strong>;
<a name="208" href="#208">208</a>             }
<a name="209" href="#209">209</a>             <strong>else</strong>
<a name="210" href="#210">210</a>             {
<a name="211" href="#211">211</a>                 locationPath = <strong>null</strong>;
<a name="212" href="#212">212</a>                 filterExpr   = (FilterExpr) popped;
<a name="213" href="#213">213</a>             }
<a name="214" href="#214">214</a>         }
<a name="215" href="#215">215</a>         popFrame();
<a name="216" href="#216">216</a> 
<a name="217" href="#217">217</a>         push( getXPathFactory().createPathExpr( filterExpr,
<a name="218" href="#218">218</a>                                                locationPath ) );
<a name="219" href="#219">219</a>     }
<a name="220" href="#220">220</a> 
<a name="221" href="#221">221</a>     <strong>public</strong> <strong>void</strong> startAbsoluteLocationPath() throws JaxenException
<a name="222" href="#222">222</a>     {
<a name="223" href="#223">223</a>         pushFrame();
<a name="224" href="#224">224</a> 
<a name="225" href="#225">225</a>         push( getXPathFactory().createAbsoluteLocationPath() );
<a name="226" href="#226">226</a>     }
<a name="227" href="#227">227</a> 
<a name="228" href="#228">228</a>     <strong>public</strong> <strong>void</strong> endAbsoluteLocationPath() throws JaxenException
<a name="229" href="#229">229</a>     {
<a name="230" href="#230">230</a>         endLocationPath();
<a name="231" href="#231">231</a>     }
<a name="232" href="#232">232</a> 
<a name="233" href="#233">233</a>     <strong>public</strong> <strong>void</strong> startRelativeLocationPath() throws JaxenException
<a name="234" href="#234">234</a>     {
<a name="235" href="#235">235</a>         pushFrame();
<a name="236" href="#236">236</a> 
<a name="237" href="#237">237</a>         push( getXPathFactory().createRelativeLocationPath() );
<a name="238" href="#238">238</a>     }
<a name="239" href="#239">239</a> 
<a name="240" href="#240">240</a>     <strong>public</strong> <strong>void</strong> endRelativeLocationPath() throws JaxenException
<a name="241" href="#241">241</a>     {
<a name="242" href="#242">242</a>         endLocationPath();
<a name="243" href="#243">243</a>     }
<a name="244" href="#244">244</a> 
<a name="245" href="#245">245</a>     <strong>protected</strong> <strong>void</strong> endLocationPath() throws JaxenException 
<a name="246" href="#246">246</a>     {
<a name="247" href="#247">247</a>         <a href="../../org/jaxen/expr/LocationPath.html">LocationPath</a> path = (LocationPath) peekFrame().removeFirst();
<a name="248" href="#248">248</a> 
<a name="249" href="#249">249</a>         addSteps( path,
<a name="250" href="#250">250</a>                   popFrame().iterator() );
<a name="251" href="#251">251</a> 
<a name="252" href="#252">252</a>         push( path );
<a name="253" href="#253">253</a>     }
<a name="254" href="#254">254</a> 
<a name="255" href="#255">255</a>     <strong>protected</strong> <strong>void</strong> addSteps(<a href="../../org/jaxen/expr/LocationPath.html">LocationPath</a> locationPath,
<a name="256" href="#256">256</a>                           Iterator stepIter)
<a name="257" href="#257">257</a>     {
<a name="258" href="#258">258</a>         <strong>while</strong> ( stepIter.hasNext() )
<a name="259" href="#259">259</a>         {
<a name="260" href="#260">260</a>             locationPath.addStep( (Step) stepIter.next() );
<a name="261" href="#261">261</a>         }
<a name="262" href="#262">262</a>     }
<a name="263" href="#263">263</a> 
<a name="264" href="#264">264</a>     <strong>public</strong> <strong>void</strong> startNameStep(<strong>int</strong> axis,
<a name="265" href="#265">265</a>                               String prefix,
<a name="266" href="#266">266</a>                               String localName) throws JaxenException
<a name="267" href="#267">267</a>     {
<a name="268" href="#268">268</a>         pushFrame();
<a name="269" href="#269">269</a> 
<a name="270" href="#270">270</a>         push( getXPathFactory().createNameStep( axis,
<a name="271" href="#271">271</a>                                                prefix,
<a name="272" href="#272">272</a>                                                localName ) );
<a name="273" href="#273">273</a>     }
<a name="274" href="#274">274</a> 
<a name="275" href="#275">275</a>     <strong>public</strong> <strong>void</strong> endNameStep() 
<a name="276" href="#276">276</a>     {
<a name="277" href="#277">277</a>         endStep();
<a name="278" href="#278">278</a>     }
<a name="279" href="#279">279</a>     
<a name="280" href="#280">280</a>     <strong>public</strong> <strong>void</strong> startTextNodeStep(<strong>int</strong> axis) throws JaxenException
<a name="281" href="#281">281</a>     {
<a name="282" href="#282">282</a>         <em class="comment">//System.err.println("startTextNodeStep()");</em>
<a name="283" href="#283">283</a>         pushFrame();
<a name="284" href="#284">284</a>         
<a name="285" href="#285">285</a>         push( getXPathFactory().createTextNodeStep( axis ) );
<a name="286" href="#286">286</a>     }
<a name="287" href="#287">287</a>     
<a name="288" href="#288">288</a>     <strong>public</strong> <strong>void</strong> endTextNodeStep()
<a name="289" href="#289">289</a>     {
<a name="290" href="#290">290</a>         endStep();
<a name="291" href="#291">291</a>     }
<a name="292" href="#292">292</a> 
<a name="293" href="#293">293</a>     <strong>public</strong> <strong>void</strong> startCommentNodeStep(<strong>int</strong> axis) throws JaxenException
<a name="294" href="#294">294</a>     {
<a name="295" href="#295">295</a>         pushFrame();
<a name="296" href="#296">296</a> 
<a name="297" href="#297">297</a>         push( getXPathFactory().createCommentNodeStep( axis ) );
<a name="298" href="#298">298</a>     }
<a name="299" href="#299">299</a> 
<a name="300" href="#300">300</a>     <strong>public</strong> <strong>void</strong> endCommentNodeStep()
<a name="301" href="#301">301</a>     {
<a name="302" href="#302">302</a>         endStep();
<a name="303" href="#303">303</a>     }
<a name="304" href="#304">304</a>         
<a name="305" href="#305">305</a>     <strong>public</strong> <strong>void</strong> startAllNodeStep(<strong>int</strong> axis) throws JaxenException
<a name="306" href="#306">306</a>     {
<a name="307" href="#307">307</a>         pushFrame();
<a name="308" href="#308">308</a> 
<a name="309" href="#309">309</a>         push( getXPathFactory().createAllNodeStep( axis ) );
<a name="310" href="#310">310</a>     }
<a name="311" href="#311">311</a> 
<a name="312" href="#312">312</a>     <strong>public</strong> <strong>void</strong> endAllNodeStep()
<a name="313" href="#313">313</a>     {
<a name="314" href="#314">314</a>         endStep();
<a name="315" href="#315">315</a>     }
<a name="316" href="#316">316</a> 
<a name="317" href="#317">317</a>     <strong>public</strong> <strong>void</strong> startProcessingInstructionNodeStep(<strong>int</strong> axis,
<a name="318" href="#318">318</a>                                                    String name) throws JaxenException
<a name="319" href="#319">319</a>     {
<a name="320" href="#320">320</a>         pushFrame();
<a name="321" href="#321">321</a> 
<a name="322" href="#322">322</a>         push( getXPathFactory().createProcessingInstructionNodeStep( axis,
<a name="323" href="#323">323</a>                                                                     name ) );
<a name="324" href="#324">324</a>     }
<a name="325" href="#325">325</a>     
<a name="326" href="#326">326</a>     <strong>public</strong> <strong>void</strong> endProcessingInstructionNodeStep()
<a name="327" href="#327">327</a>     {
<a name="328" href="#328">328</a>         endStep();
<a name="329" href="#329">329</a>     }
<a name="330" href="#330">330</a> 
<a name="331" href="#331">331</a>     <strong>protected</strong> <strong>void</strong> endStep()
<a name="332" href="#332">332</a>     {
<a name="333" href="#333">333</a>         <a href="../../org/jaxen/expr/Step.html">Step</a> step = (Step) peekFrame().removeFirst();
<a name="334" href="#334">334</a> 
<a name="335" href="#335">335</a>         addPredicates( step,
<a name="336" href="#336">336</a>                        popFrame().iterator() );
<a name="337" href="#337">337</a> 
<a name="338" href="#338">338</a>         push( step );
<a name="339" href="#339">339</a>     }
<a name="340" href="#340">340</a>     
<a name="341" href="#341">341</a>     <strong>public</strong> <strong>void</strong> startPredicate()
<a name="342" href="#342">342</a>     {
<a name="343" href="#343">343</a>         pushFrame();
<a name="344" href="#344">344</a>     }
<a name="345" href="#345">345</a>     
<a name="346" href="#346">346</a>     <strong>public</strong> <strong>void</strong> endPredicate() throws JaxenException
<a name="347" href="#347">347</a>     {
<a name="348" href="#348">348</a>         <a href="../../org/jaxen/expr/Predicate.html">Predicate</a> predicate = getXPathFactory().createPredicate( (Expr) pop() );
<a name="349" href="#349">349</a> 
<a name="350" href="#350">350</a>         popFrame();
<a name="351" href="#351">351</a> 
<a name="352" href="#352">352</a>         push( predicate );
<a name="353" href="#353">353</a>     }
<a name="354" href="#354">354</a> 
<a name="355" href="#355">355</a>     <strong>public</strong> <strong>void</strong> startFilterExpr() 
<a name="356" href="#356">356</a>     {
<a name="357" href="#357">357</a>         pushFrame();
<a name="358" href="#358">358</a>     }
<a name="359" href="#359">359</a> 
<a name="360" href="#360">360</a>     <strong>public</strong> <strong>void</strong> endFilterExpr() throws JaxenException
<a name="361" href="#361">361</a>     {
<a name="362" href="#362">362</a>         <a href="../../org/jaxen/expr/Expr.html">Expr</a> expr = (Expr) peekFrame().removeFirst();
<a name="363" href="#363">363</a>         
<a name="364" href="#364">364</a>         <a href="../../org/jaxen/expr/FilterExpr.html">FilterExpr</a> filter = getXPathFactory().createFilterExpr( expr );
<a name="365" href="#365">365</a> 
<a name="366" href="#366">366</a>         Iterator predIter = popFrame().iterator();
<a name="367" href="#367">367</a> 
<a name="368" href="#368">368</a>         addPredicates( filter,
<a name="369" href="#369">369</a>                        predIter );
<a name="370" href="#370">370</a> 
<a name="371" href="#371">371</a>         push( filter );
<a name="372" href="#372">372</a>     }
<a name="373" href="#373">373</a> 
<a name="374" href="#374">374</a>     <strong>protected</strong> <strong>void</strong> addPredicates(<a href="../../org/jaxen/expr/Predicated.html">Predicated</a> obj,
<a name="375" href="#375">375</a>                                Iterator predIter)
<a name="376" href="#376">376</a>     {
<a name="377" href="#377">377</a>         <strong>while</strong> ( predIter.hasNext() )
<a name="378" href="#378">378</a>         {
<a name="379" href="#379">379</a>             obj.addPredicate( (Predicate) predIter.next() );
<a name="380" href="#380">380</a>         }
<a name="381" href="#381">381</a>     }
<a name="382" href="#382">382</a> 
<a name="383" href="#383">383</a>     <strong>protected</strong> <strong>void</strong> returnExpr()
<a name="384" href="#384">384</a>     {
<a name="385" href="#385">385</a>         <a href="../../org/jaxen/expr/Expr.html">Expr</a> expr = (Expr) pop();
<a name="386" href="#386">386</a>         popFrame();
<a name="387" href="#387">387</a>         push( expr );
<a name="388" href="#388">388</a>     }
<a name="389" href="#389">389</a> 
<a name="390" href="#390">390</a>     <strong>public</strong> <strong>void</strong> startOrExpr()
<a name="391" href="#391">391</a>     {
<a name="392" href="#392">392</a>     }
<a name="393" href="#393">393</a> 
<a name="394" href="#394">394</a>     <strong>public</strong> <strong>void</strong> endOrExpr(<strong>boolean</strong> create) throws JaxenException
<a name="395" href="#395">395</a>     {
<a name="396" href="#396">396</a> 
<a name="397" href="#397">397</a>         <strong>if</strong> ( create )
<a name="398" href="#398">398</a>         {
<a name="399" href="#399">399</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> rhs = (Expr) pop();
<a name="400" href="#400">400</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> lhs = (Expr) pop();
<a name="401" href="#401">401</a> 
<a name="402" href="#402">402</a>             push( getXPathFactory().createOrExpr( lhs,
<a name="403" href="#403">403</a>                                                  rhs ) );
<a name="404" href="#404">404</a>         }
<a name="405" href="#405">405</a>     }
<a name="406" href="#406">406</a> 
<a name="407" href="#407">407</a>     <strong>public</strong> <strong>void</strong> startAndExpr()
<a name="408" href="#408">408</a>     {
<a name="409" href="#409">409</a>     }
<a name="410" href="#410">410</a> 
<a name="411" href="#411">411</a>     <strong>public</strong> <strong>void</strong> endAndExpr(<strong>boolean</strong> create) throws JaxenException
<a name="412" href="#412">412</a>     {
<a name="413" href="#413">413</a> 
<a name="414" href="#414">414</a>         <strong>if</strong> ( create )
<a name="415" href="#415">415</a>         {
<a name="416" href="#416">416</a> 
<a name="417" href="#417">417</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> rhs = (Expr) pop();
<a name="418" href="#418">418</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> lhs = (Expr) pop();
<a name="419" href="#419">419</a> 
<a name="420" href="#420">420</a>             push( getXPathFactory().createAndExpr( lhs,
<a name="421" href="#421">421</a>                                                   rhs ) );
<a name="422" href="#422">422</a>         }
<a name="423" href="#423">423</a>     }
<a name="424" href="#424">424</a> 
<a name="425" href="#425">425</a>     <strong>public</strong> <strong>void</strong> startEqualityExpr()
<a name="426" href="#426">426</a>     {
<a name="427" href="#427">427</a>     }
<a name="428" href="#428">428</a> 
<a name="429" href="#429">429</a>     <strong>public</strong> <strong>void</strong> endEqualityExpr(<strong>int</strong> <strong>operator</strong>) throws JaxenException
<a name="430" href="#430">430</a>     {
<a name="431" href="#431">431</a> 
<a name="432" href="#432">432</a>         <strong>if</strong> ( <strong>operator</strong> != Operator.NO_OP )
<a name="433" href="#433">433</a>         {
<a name="434" href="#434">434</a>             
<a name="435" href="#435">435</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> rhs = (Expr) pop();
<a name="436" href="#436">436</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> lhs = (Expr) pop();
<a name="437" href="#437">437</a>             
<a name="438" href="#438">438</a>             push( getXPathFactory().createEqualityExpr( lhs,
<a name="439" href="#439">439</a>                                                         rhs,
<a name="440" href="#440">440</a>                                                         <strong>operator</strong> ) );
<a name="441" href="#441">441</a>         }
<a name="442" href="#442">442</a>     }
<a name="443" href="#443">443</a> 
<a name="444" href="#444">444</a>     <strong>public</strong> <strong>void</strong> startRelationalExpr()
<a name="445" href="#445">445</a>     {
<a name="446" href="#446">446</a>     }
<a name="447" href="#447">447</a> 
<a name="448" href="#448">448</a>     <strong>public</strong> <strong>void</strong> endRelationalExpr(<strong>int</strong> <strong>operator</strong>) throws JaxenException
<a name="449" href="#449">449</a>     {
<a name="450" href="#450">450</a> 
<a name="451" href="#451">451</a>         <strong>if</strong> ( <strong>operator</strong> != Operator.NO_OP )
<a name="452" href="#452">452</a>         {
<a name="453" href="#453">453</a> 
<a name="454" href="#454">454</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> rhs = (Expr) pop();
<a name="455" href="#455">455</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> lhs = (Expr) pop();
<a name="456" href="#456">456</a> 
<a name="457" href="#457">457</a>             push( getXPathFactory().createRelationalExpr( lhs,
<a name="458" href="#458">458</a>                                                          rhs,
<a name="459" href="#459">459</a>                                                          <strong>operator</strong> ) );
<a name="460" href="#460">460</a>         }
<a name="461" href="#461">461</a>     }
<a name="462" href="#462">462</a> 
<a name="463" href="#463">463</a>     <strong>public</strong> <strong>void</strong> startAdditiveExpr()
<a name="464" href="#464">464</a>     {
<a name="465" href="#465">465</a>     }
<a name="466" href="#466">466</a> 
<a name="467" href="#467">467</a>     <strong>public</strong> <strong>void</strong> endAdditiveExpr(<strong>int</strong> <strong>operator</strong>) throws JaxenException
<a name="468" href="#468">468</a>     {
<a name="469" href="#469">469</a> 
<a name="470" href="#470">470</a>         <strong>if</strong> ( <strong>operator</strong> != Operator.NO_OP )
<a name="471" href="#471">471</a>         {
<a name="472" href="#472">472</a>             
<a name="473" href="#473">473</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> rhs = (Expr) pop();
<a name="474" href="#474">474</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> lhs = (Expr) pop();
<a name="475" href="#475">475</a>             
<a name="476" href="#476">476</a>             push( getXPathFactory().createAdditiveExpr( lhs,
<a name="477" href="#477">477</a>                                                         rhs,
<a name="478" href="#478">478</a>                                                         <strong>operator</strong> ) );
<a name="479" href="#479">479</a>         }
<a name="480" href="#480">480</a>     }
<a name="481" href="#481">481</a> 
<a name="482" href="#482">482</a>     <strong>public</strong> <strong>void</strong> startMultiplicativeExpr()
<a name="483" href="#483">483</a>     {
<a name="484" href="#484">484</a>     }
<a name="485" href="#485">485</a> 
<a name="486" href="#486">486</a>     <strong>public</strong> <strong>void</strong> endMultiplicativeExpr(<strong>int</strong> <strong>operator</strong>) throws JaxenException
<a name="487" href="#487">487</a>     {
<a name="488" href="#488">488</a> 
<a name="489" href="#489">489</a>         <strong>if</strong> ( <strong>operator</strong> != Operator.NO_OP )
<a name="490" href="#490">490</a>         {
<a name="491" href="#491">491</a> 
<a name="492" href="#492">492</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> rhs = (Expr) pop();
<a name="493" href="#493">493</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> lhs = (Expr) pop();
<a name="494" href="#494">494</a>             
<a name="495" href="#495">495</a>             push( getXPathFactory().createMultiplicativeExpr( lhs,
<a name="496" href="#496">496</a>                                                              rhs,
<a name="497" href="#497">497</a>                                                              <strong>operator</strong> ) );
<a name="498" href="#498">498</a>         }
<a name="499" href="#499">499</a>     }
<a name="500" href="#500">500</a> 
<a name="501" href="#501">501</a>     <strong>public</strong> <strong>void</strong> startUnaryExpr()
<a name="502" href="#502">502</a>     {
<a name="503" href="#503">503</a>      }
<a name="504" href="#504">504</a> 
<a name="505" href="#505">505</a>     <strong>public</strong> <strong>void</strong> endUnaryExpr(<strong>int</strong> <strong>operator</strong>) throws JaxenException
<a name="506" href="#506">506</a>     {
<a name="507" href="#507">507</a> 
<a name="508" href="#508">508</a>         <strong>if</strong> ( <strong>operator</strong> != Operator.NO_OP )
<a name="509" href="#509">509</a>         {
<a name="510" href="#510">510</a>             push( getXPathFactory().createUnaryExpr( (Expr) pop(),
<a name="511" href="#511">511</a>                                                     <strong>operator</strong> ) );
<a name="512" href="#512">512</a>         }
<a name="513" href="#513">513</a>     }
<a name="514" href="#514">514</a> 
<a name="515" href="#515">515</a>     <strong>public</strong> <strong>void</strong> startUnionExpr() 
<a name="516" href="#516">516</a>     {
<a name="517" href="#517">517</a>     }
<a name="518" href="#518">518</a> 
<a name="519" href="#519">519</a>     <strong>public</strong> <strong>void</strong> endUnionExpr(<strong>boolean</strong> create) throws JaxenException
<a name="520" href="#520">520</a>     {
<a name="521" href="#521">521</a> 
<a name="522" href="#522">522</a>         <strong>if</strong> ( create )
<a name="523" href="#523">523</a>         {
<a name="524" href="#524">524</a> 
<a name="525" href="#525">525</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> rhs = (Expr) pop();
<a name="526" href="#526">526</a>             <a href="../../org/jaxen/expr/Expr.html">Expr</a> lhs = (Expr) pop();
<a name="527" href="#527">527</a> 
<a name="528" href="#528">528</a>             push( getXPathFactory().createUnionExpr( lhs,
<a name="529" href="#529">529</a>                                                     rhs ) );
<a name="530" href="#530">530</a>         }
<a name="531" href="#531">531</a>     }
<a name="532" href="#532">532</a> 
<a name="533" href="#533">533</a>     <strong>public</strong> <strong>void</strong> number(<strong>int</strong> number) throws JaxenException
<a name="534" href="#534">534</a>     {
<a name="535" href="#535">535</a>         push( getXPathFactory().createNumberExpr( number ) );
<a name="536" href="#536">536</a>     }
<a name="537" href="#537">537</a> 
<a name="538" href="#538">538</a>     <strong>public</strong> <strong>void</strong> number(<strong>double</strong> number) throws JaxenException
<a name="539" href="#539">539</a>     {
<a name="540" href="#540">540</a>         push( getXPathFactory().createNumberExpr( number ) );
<a name="541" href="#541">541</a>     }
<a name="542" href="#542">542</a> 
<a name="543" href="#543">543</a>     <strong>public</strong> <strong>void</strong> literal(String literal) throws JaxenException
<a name="544" href="#544">544</a>     {
<a name="545" href="#545">545</a>         push( getXPathFactory().createLiteralExpr( literal ) );
<a name="546" href="#546">546</a>     }
<a name="547" href="#547">547</a> 
<a name="548" href="#548">548</a>     <strong>public</strong> <strong>void</strong> variableReference(String prefix,
<a name="549" href="#549">549</a>                                   String variableName) throws JaxenException
<a name="550" href="#550">550</a>     {
<a name="551" href="#551">551</a>         push( getXPathFactory().createVariableReferenceExpr( prefix,
<a name="552" href="#552">552</a>                                                              variableName ) );
<a name="553" href="#553">553</a>     }
<a name="554" href="#554">554</a> 
<a name="555" href="#555">555</a>     <strong>public</strong> <strong>void</strong> startFunction(String prefix,
<a name="556" href="#556">556</a>                               String functionName) throws JaxenException
<a name="557" href="#557">557</a>     {
<a name="558" href="#558">558</a>         pushFrame();
<a name="559" href="#559">559</a>         push( getXPathFactory().createFunctionCallExpr( prefix,
<a name="560" href="#560">560</a>                                                         functionName ) );
<a name="561" href="#561">561</a>     }
<a name="562" href="#562">562</a> 
<a name="563" href="#563">563</a>     <strong>public</strong> <strong>void</strong> endFunction()
<a name="564" href="#564">564</a>     {
<a name="565" href="#565">565</a>         <a href="../../org/jaxen/expr/FunctionCallExpr.html">FunctionCallExpr</a> function = (FunctionCallExpr) peekFrame().removeFirst();
<a name="566" href="#566">566</a> 
<a name="567" href="#567">567</a>         addParameters( function,
<a name="568" href="#568">568</a>                        popFrame().iterator() );
<a name="569" href="#569">569</a> 
<a name="570" href="#570">570</a>         push( function );
<a name="571" href="#571">571</a>     }
<a name="572" href="#572">572</a> 
<a name="573" href="#573">573</a>     <strong>protected</strong> <strong>void</strong> addParameters(<a href="../../org/jaxen/expr/FunctionCallExpr.html">FunctionCallExpr</a> function,
<a name="574" href="#574">574</a>                                Iterator paramIter)
<a name="575" href="#575">575</a>     {
<a name="576" href="#576">576</a>         <strong>while</strong> ( paramIter.hasNext() )
<a name="577" href="#577">577</a>         {
<a name="578" href="#578">578</a>             function.addParameter( (Expr) paramIter.next() );
<a name="579" href="#579">579</a>         }
<a name="580" href="#580">580</a>     }
<a name="581" href="#581">581</a> 
<a name="582" href="#582">582</a>     <strong>protected</strong> <strong>int</strong> stackSize()
<a name="583" href="#583">583</a>     {
<a name="584" href="#584">584</a>         <strong>return</strong> peekFrame().size();
<a name="585" href="#585">585</a>     }
<a name="586" href="#586">586</a> 
<a name="587" href="#587">587</a>     <strong>protected</strong> <strong>void</strong> push(Object obj)
<a name="588" href="#588">588</a>     {
<a name="589" href="#589">589</a>         peekFrame().addLast( obj );
<a name="590" href="#590">590</a>     }
<a name="591" href="#591">591</a> 
<a name="592" href="#592">592</a>     <strong>protected</strong> Object pop()
<a name="593" href="#593">593</a>     {
<a name="594" href="#594">594</a>         <strong>return</strong> peekFrame().removeLast();
<a name="595" href="#595">595</a>     }
<a name="596" href="#596">596</a> 
<a name="597" href="#597">597</a>     <strong>protected</strong> <strong>boolean</strong> canPop()
<a name="598" href="#598">598</a>     {
<a name="599" href="#599">599</a>         <strong>return</strong> ( peekFrame().size() > 0 );
<a name="600" href="#600">600</a>     }
<a name="601" href="#601">601</a> 
<a name="602" href="#602">602</a>     <strong>protected</strong> <strong>void</strong> pushFrame()
<a name="603" href="#603">603</a>     {
<a name="604" href="#604">604</a>         <strong>this</strong>.stack.addLast( <strong>new</strong> LinkedList() );
<a name="605" href="#605">605</a>     }
<a name="606" href="#606">606</a> 
<a name="607" href="#607">607</a>     <strong>protected</strong> LinkedList popFrame()
<a name="608" href="#608">608</a>     {
<a name="609" href="#609">609</a>         <strong>return</strong> (LinkedList) <strong>this</strong>.stack.removeLast();
<a name="610" href="#610">610</a>     }
<a name="611" href="#611">611</a> 
<a name="612" href="#612">612</a>     <strong>protected</strong> LinkedList peekFrame()
<a name="613" href="#613">613</a>     {
<a name="614" href="#614">614</a>         <strong>return</strong> (LinkedList) <strong>this</strong>.stack.getLast();
<a name="615" href="#615">615</a>     }
<a name="616" href="#616">616</a> }
</pre>
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